JEE Main · 2022 · 27 Jun 2022 · Shift 2 · General Organic Chemistry

Which of the following is most stable?

(A)(see structure)
✓ Correct
(B)(see structure)
(C)(see structure)
(D)(see structure)

Answer: (A)

Solution

Option (A) represents a cyclic conjugated system with 6 π-electrons (benzene or a benzene derivative), which satisfies Hückel's rule (4n+2 π-electrons, n=1) and is aromatic. Aromatic compounds are exceptionally stable due to resonance delocalization. The other options either lack complete conjugation, have incorrect electron count for aromaticity, or are non-aromatic/anti-aromatic. Therefore, option (A) is the most stable.

JEE Main · 2022 · 27 Jun 2022 · Shift 2 · Single correct option

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